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#include "stdafx.h"
#include "Core/API/QueryHeap.h"
#include "Core/API/Device.h"

namespace Falcor
{
    static D3D12_QUERY_HEAP_TYPE getD3D12HeapType(QueryHeap::Type t)
    {
        switch (t)
        {
        case QueryHeap::Type::Timestamp:
            return D3D12_QUERY_HEAP_TYPE_TIMESTAMP;
        case QueryHeap::Type::Occlusion:
            return D3D12_QUERY_HEAP_TYPE_OCCLUSION;
        case QueryHeap::Type::PipelineStats:
            return D3D12_QUERY_HEAP_TYPE_PIPELINE_STATISTICS;
        default:
            should_not_get_here();
            return D3D12_QUERY_HEAP_TYPE(-1);
        }
    }

    QueryHeap::QueryHeap(Type type, uint32_t count) : mType(type), mCount(count)
    {
        ID3D12Device* pDevice = gpDevice->getApiHandle().GetInterfacePtr();
        D3D12_QUERY_HEAP_DESC desc;
        desc.Count = count;
        desc.NodeMask = 0;
        desc.Type = getD3D12HeapType(type);

        d3d_call(pDevice->CreateQueryHeap(&desc, IID_PPV_ARGS(&mApiHandle)));
    }
}
